CN109286293A - The manufacturing method of electric vehicle, wheel, switched reluctance machines and its iron core - Google Patents
The manufacturing method of electric vehicle, wheel, switched reluctance machines and its iron core Download PDFInfo
- Publication number
- CN109286293A CN109286293A CN201710885521.3A CN201710885521A CN109286293A CN 109286293 A CN109286293 A CN 109286293A CN 201710885521 A CN201710885521 A CN 201710885521A CN 109286293 A CN109286293 A CN 109286293A
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- stator
- switched reluctance
- tooth
- reluctance machines
- rotor
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 121
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 238000004804 winding Methods 0.000 claims abstract description 153
- 210000000515 tooth Anatomy 0.000 claims abstract description 100
- 229910052742 iron Inorganic materials 0.000 claims abstract description 48
- 239000000463 material Substances 0.000 claims abstract description 46
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 39
- 238000004512 die casting Methods 0.000 claims abstract description 16
- 230000011218 segmentation Effects 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 13
- 238000001514 detection method Methods 0.000 description 8
- 230000005389 magnetism Effects 0.000 description 6
- 230000005611 electricity Effects 0.000 description 5
- 230000002459 sustained effect Effects 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 229910000976 Electrical steel Inorganic materials 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 239000010970 precious metal Substances 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000006247 magnetic powder Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 229910000702 sendust Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 210000003781 tooth socket Anatomy 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K19/00—Synchronous motors or generators
- H02K19/02—Synchronous motors
- H02K19/10—Synchronous motors for multi-phase current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
- H02K1/148—Sectional cores
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
- H02K11/22—Optical devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/27—Devices for sensing current, or actuated thereby
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/022—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with salient poles or claw-shaped poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
- H02K16/04—Machines with one rotor and two stators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
- H02K29/08—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates, magneto-resistors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/18—Windings for salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/18—Windings for salient poles
- H02K3/20—Windings for salient poles for auxiliary purposes, e.g. damping or commutating
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/08—Reluctance motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/08—Reluctance motors
- H02P25/092—Converters specially adapted for controlling reluctance motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/08—Reluctance motors
- H02P25/098—Arrangements for reducing torque ripple
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/10—Arrangements for controlling torque ripple, e.g. providing reduced torque ripple
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/28—Arrangements for controlling current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Abstract
The invention discloses a kind of electric vehicles, wheel, the manufacturing method of switched reluctance machines and its iron core, the switched reluctance machines include stator and rotor, wherein stator is provided at least three stator modules along axial segmentation, each stator module respectively includes circumferential periodically setting and the multiple stator tooths being spaced each other by stator slot and the winding being set around on stator tooth along stator, the stator tooth of at least three stator modules staggers successively predetermined angular along the circumferential direction of stator, winding in each stator module is same phase winding, the material of the iron core of switched reluctance machines is iron silica-alumina material, iron silica-alumina material die casting forms iron core.The present invention can reduce cost.
Description
Technical field
The present invention relates to the technical field of motor, it is related to the system of a kind of electric vehicle, wheel, switched reluctance machines and its iron core
Make method.
Background technique
For inventor in practice, it has been found that traditional switched reluctance machines include stator and rotor, stator has stator core,
Rotor has rotor core, at present by carrying out punching to entire silicon steel sheet, and the silicon steel sheet after punching is laminated, with shape
At stator core or rotor core.Since the price of silicon steel sheet is higher, lead to the at high cost of traditional switched reluctance machines.
Summary of the invention
In the prior art at high cost in order to solve the problems, such as, the present invention provides an electric vehicle, wheel, switched reluctance machines
And its manufacturing method of iron core.
To solve the above problems, the embodiment of the invention provides a kind of switched reluctance machines comprising stator and rotor,
Wherein the stator is provided at least three stator modules along axial segmentation, and each stator module is respectively included along described fixed
Sub circumferential periodical setting and the multiple stator tooths being spaced each other by stator slot and the winding being set around on the stator tooth,
The stator tooth of at least three stator module staggers successively predetermined angular, each stator module along the circumferential direction of the stator
In the winding be same phase winding, the rotor include the circumferential periodically setting along the rotor and by rotor slot each other
Multiple rotor tooths at interval, the material of the iron core of the switched reluctance machines are iron silica-alumina material, the iron silica-alumina material die casting
Into the iron core
Wherein, the iron core of the switched reluctance machines includes the stator core of the stator, the side of the stator core
It is arranged fluted, the winding winding is in the groove.
Wherein, the iron silica-alumina material include 85% iron, 9% silicon and 6% aluminium alloy powder.
Wherein, the quantity of the stator tooth of at least three stator module and of same size, the predetermined angular are T1/N,
Wherein the T1 is the angle period of the stator tooth, and the N is the quantity of at least three stator module.
Wherein, the quantity of the stator tooth is odd number.
Wherein, the rotor includes circumferential multiple turns for being periodically arranged and being spaced each other by rotor slot along the rotor
Sub- tooth, wherein the quantity of the rotor tooth is identical as the quantity of the stator tooth, and the width of the rotor tooth is less than described fixed
The width of pilot trench.
Wherein, the width ratio of the stator slot and the stator tooth is 1:0.95-0.85, the stator tooth and the rotor
The width ratio of tooth is 1:1.05-0.95.
Wherein, the switched reluctance machines further comprise switch driving circuit, and the switch driving circuit connects direct current
On the winding of power supply and at least three stator module, with periodically control the DC power supply successively it is described at least
The driving period corresponding to three stator modules applies the driving current on the winding, wherein at least three stator
The phase of the driving period of component offsets one from another.
To solve the above problems, being used to manufacture switching magnetic-resistance electricity the present invention also provides a kind of manufacturing method of iron core
The stator core and/or rotor core of machine, the manufacturing method include:
Iron silica-alumina material is provided;
The stator core and/or rotor core of the switched reluctance machines are formed using the iron silica-alumina material die casting.
Wherein, the iron silica-alumina material include 85% iron, 9% silicon and 6% aluminium alloy powder.
Wherein, the switched reluctance machines include stator and rotor, wherein the stator along axial segmentation be provided with to
Few three stator modules, each stator module respectively include along the stator circumferential periodically setting and by stator slot that
Multiple stator tooths at this interval and the winding being set around on the stator tooth, the stator tooth edge of at least three stator module
The circumferential direction of the stator staggers successively predetermined angular, and the winding in each stator module is same phase winding, described
Rotor includes the circumferential multiple rotor tooths for being periodically arranged and being spaced each other by rotor slot along the rotor.
Wherein, include: using the stator core of the iron silica-alumina material die casting into the switched reluctance machines
In the side of the stator core, setting is fluted, and in the groove by the winding winding.
In order to solve the above technical problems, wheel uses In-wheel motor driving, hub motor the present invention also provides a kind of wheel
Using any one of above-described embodiment switched reluctance machines structure.
In order to solve the above technical problems, the present invention also provides a kind of electric vehicle, electric vehicle is pure electric vehicle or hybrid electric vehicle,
Electric vehicle is using any one of above-described embodiment switched reluctance machines structure.
Compared with prior art, the material of the iron core of the switched reluctance machines is iron silica-alumina material, iron silica-alumina material die casting
Into iron core, due to without precious metal in iron silica-alumina material, iron silica-alumina material it is cheap, reduce cost;In addition, iron
The magnetism of silica-alumina material is good, can be improved the magnetism of stator core.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the stereoscopic schematic diagram of the switched reluctance machines of first embodiment of the invention;
Fig. 2 is the decomposition diagram of switched reluctance machines in Fig. 1;
Fig. 3 is the stereoscopic schematic diagram of the three-phase switch reluctance machine of external stator internal rotor;
Fig. 4 is the structural schematic diagram that A phase winding is wound around the first stator tooth in Fig. 1;
Fig. 5 is the structural schematic diagram of the first stator tooth in Fig. 1, the second stator tooth and third stator tooth;
Fig. 6 is the magnetic line of force schematic diagram that the center of rotor tooth is overlapped with the center of the first stator tooth in Fig. 1;
Fig. 7 is the structural schematic diagram that the first stator tooth is aligned with rotor slot in Fig. 1;
Fig. 8 is the magnetic line of force schematic diagram that rotor tooth and the first stator tooth position are staggered in Fig. 1;
Fig. 9 is the schematic diagram for the inductance curve that switched reluctance machines work normally in Fig. 1;
Figure 10 is that the rotor tooth of switched reluctance machines is equipped with the structural schematic diagram of top rake;
Figure 11 is the circuit diagram of switch driving circuit;
Figure 12 is the timing diagram of the working principle of switched reluctance machines;
Figure 13 is the structural schematic diagram of current detection circuit;
Figure 14 is the timing diagram of the working principle of the switched reluctance machines of fifth embodiment of the invention;
Figure 15 is the structural schematic diagram of position sensor;
Figure 16 is the flow chart of the control method of the electric current of the switched reluctance machines of first embodiment of the invention;
Figure 17 is the flow chart of the manufacturing method of the iron core of first embodiment of the invention;
Figure 18 is the diagrammatic cross-section of stator core.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention is described in further detail.It is emphasized that following implement
Example is merely to illustrate the present invention, but is not defined to the scope of the present invention.Likewise, following embodiment is only portion of the invention
Point embodiment and not all embodiments, institute obtained by those of ordinary skill in the art without making creative efforts
There are other embodiments, shall fall within the protection scope of the present invention.
Description and claims of this specification and term " first ", " second ", " third " " in above-mentioned attached drawing
The (if present)s such as four " are to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should manage
The data that solution uses in this way are interchangeable under appropriate circumstances, so that the embodiment of the present invention described herein for example can be to remove
Sequence other than those of illustrating or describe herein is implemented.In addition, term " includes " and " having " and theirs is any
Deformation, it is intended that cover it is non-exclusive include, for example, containing the process, method of a series of steps or units, system, production
Product or equipment those of are not necessarily limited to be clearly listed step or unit, but may include be not clearly listed or for this
A little process, methods, the other step or units of product or equipment inherently.
As shown in Figs. 1-2, the present invention provides the switched reluctance machines of first embodiment, which includes fixed
Son 11 and rotor 12, wherein stator 11 is provided at least three stator modules along axial segmentation, and each stator module includes along fixed
The circumferential periodically setting of son 11 and the winding of the multiple stator tooths and winding being spaced each other by stator slot on the stator teeth, i.e.,
Multiple stator tooths are periodically arranged along the circumferential of stator 11, and are spaced each other with multiple stator slots.
For example, the switched reluctance machines of the present embodiment concretely three-phase switch reluctance machine, the threephase switch magnetic
Hinder the three-phase switch reluctance machine that motor can be outer rotor inner stator.As shown in Fig. 2, stator 11 along axial segmentation be arranged there are three
Stator module, respectively A phase stator module 111, B phase stator module 112 and C phase stator module 113.In other embodiments,
Switched reluctance machines can be the three-phase switch reluctance machine 30 of external stator internal rotor, as shown in Figure 3.
As shown in Fig. 2, A phase stator module 111 include multiple first stator tooths 131, multiple first stator tooths 131 with it is multiple
First stator slot 134 is spaced each other.As shown in figure 4, A phase stator module 111 further comprises being wound around on the first stator tooth 131
A phase winding 137, when A phase winding 137 applies driving current, A phase winding 137 can generate magnetic pole, and then form magnetic field.
B phase stator module 112 includes multiple B phase windings second stator tooth 132 and be wound around on the second stator tooth 132,
Multiple second stator tooths 132 are spaced each other with multiple second stator slots 135;C phase stator module 113 includes multiple third stator tooths
133 and the C phase winding that is wound around on third stator tooth 133, multiple third stator tooths 133 with multiple third stator slots 136 each other
Interval.Wherein, B phase winding is wound around on the second stator tooth 132 and C phase winding is wound around on third stator tooth 133 and A phase winding
137 structures that are wound around on the first stator tooth 131 are identical, repeat no more.
The stator tooth of at least three stator modules staggers successively predetermined angle along the circumferential direction of stator 11, so that rotor 12
Can the magnetic field caused by driving current on the winding for being successively applied at least three stator modules under the action of continuous rotation,
Successively apply driving current on the winding of at least three stator modules, under the action of the magnetic field caused by winding of rotor 12
Continuous rotation.Specifically, the second stator tooth 132 and the first stator tooth 131 stagger successively predetermined angle along the circumferential direction of stator, and
Three stator tooths 133 and the second stator tooth 132 stagger successively predetermined angle along the circumferential direction of stator;When A phase stator module 111, B phase
Stator module 112 and C phase stator module 113 successively apply driving current, produce in the magnetic field that A phase winding 137 generates, B phase winding
Under the action of the magnetic field that raw magnetic field and C phase winding generate, 12 continuous rotation of rotor.
The A phase stator module 111 of the present embodiment includes the A phase winding 137 being wound around on the first stator tooth 131, B phase stator
Component 112 includes the B phase winding being wound around on the second stator tooth 132, and C phase stator module 113 includes being wound around third stator tooth
C phase winding on 133, therefore each stator module is respectively provided with same phase winding, relative to determining for traditional switched reluctance machines
Son setting polyphase windings can reduce A phase winding, B phase since the number of turns of the turn ratio polyphase windings of same phase winding is few
The number of turns of winding and C phase winding, and then the copper loss of switched reluctance machines 10 is reduced, reduce cost.
Wherein, the quantity of the stator tooth of at least three stator modules and of same size, specifically, multiple first stator tooths
131 quantity, the quantity of multiple second stator tooths 132 are identical with the quantity of multiple third stator tooths 133, and the first stator tooth
131 width, the width of the second stator tooth 132 and third stator tooth 133 it is of same size.Therefore, A phase stator module 111, B
The processing technology of phase stator module 112 and C phase stator module 113 is identical.
Predetermined angle can be T1/N, and wherein T1 is the electrical angle period of stator tooth, and N is the number of at least three stator modules
Amount.The electrical angle period of the stator tooth is 2 π/M, and wherein M is the quantity of stator tooth, the i.e. stator of at least three stator module
Tooth is mechanical angle along the angle that the circumferential direction of stator 11 staggers successively.
As shown in figure 5, the predetermined angle that the second stator tooth 132 and the first stator tooth 131 are staggered is T1/N, wherein first is fixed
The angle cycle T 1 of sub- tooth 131 is 2 π/M, N 3, therefore the angle that the second stator tooth 132 and the first stator tooth 131 are staggered is 2
π/3M.For example, the quantity M of the first stator tooth 131 is 6, then the preset angle that the second stator tooth 132 and the first stator tooth 131 are staggered
Degree is 2 π/3M=20 °.Due to being an angle period, the second stator tooth between two adjacent the first stator tooths 131
132 and first stator tooth 131 be staggered 1/3 tooth pitch, be equivalent to the electrical angle that the second stator tooth 132 and the first stator tooth 131 are staggered
It is 120 °, which can be the distance of two neighboring first stator tooth 131.
In addition, the predetermined angle that third stator tooth 133 and the second stator tooth 132 are staggered is 2 π/3M, i.e. third stator tooth
133 and second stator tooth 132 be staggered 1/3 tooth pitch.The predetermined angle that first stator tooth 131 and third stator tooth 133 are staggered be 2 π/
3M, i.e. the first stator tooth 131 and third stator tooth 133 are staggered 1/3 tooth pitch.
As shown in Fig. 2, rotor 12 includes the circumferential periodically setting along rotor 12 and is spaced each other by rotor slot 122 more
A rotor tooth 121, i.e., multiple rotor tooths 121 are periodically arranged along the circumferential of rotor 12, and each other with multiple rotor slots 122
Interval.The quantity of rotor tooth 121 and the quantity of stator tooth are identical, and the width of rotor tooth 121 is less than the width of stator slot.
The rotor 12 of this implementation, which can be used, to be wholely set, and the length of rotor 12 axially is more than or equal to 11 edge of stator
Axial length, which can be length, the B phase stator pack of A phase stator module 111 axially
The sum of the length of length and C phase stator module 113 axially of part 112 axially, so that rotor 12 can cover A phase
Stator module 111, B phase stator module 112 and C phase stator module 113.
In other embodiments, rotor 12 can use subsection setup, such as rotor and A phase stator module, B phase stator pack
It is three sections that part and C phase stator module, which are correspondingly arranged, and the rotor tooth of three-stage rotor is axially aligned.
Wherein, the quantity of rotor tooth 121 respectively with the quantity of the first stator tooth 131, the quantity of the second stator tooth 132 and
The quantity of three stator tooths 133 is all the same, when the center of rotor tooth 121 is overlapped with the center of the first stator tooth 131, such as Fig. 6 institute
Show.
Fig. 6 is the measurement switch magnetic in 16 the first stator tooth 131 and 16 rotor tooths 121 alignment of switched reluctance machines
The magnetic line of force of motor is hindered, the magnetic field of the switched reluctance machines is indicated by magnetic line of force T.Since 11 subsection setup A phase of stator is fixed
Sub-component 111, B phase stator module 112 and C phase stator module 113, therefore magnetic line of force T, B phase winding that A phase winding 137 generates
The magnetic line of force that the magnetic line of force and C phase winding of generation generate is not interfere with each other, i.e. the mutual inductance of A phase winding 137, B phase winding and C phase winding
It is zero.In addition, the magnetic line of force T that A phase winding 137 generates will not tangle intersection, therefore the magnetic that every magnetic pole of A phase winding 137 generates
Line of force T closed circuit is located in the pole span of the magnetic pole, i.e., the magnetic line of force T that every magnetic pole of A phase winding generates will not cross over adjacent magnetic
The middle line of pole, there are mutual inductance, the electric current of energized phase can generate to interact traditional reluctance motor three-phase windings, armature-reaction it is non-
It is linearly very serious, and generate the principle torque ripple for being difficult to overcome, and switched reluctance machines provided by the invention due to
Each stator module be it is independent, the winding of each stator module is same phase winding, so mutual inductance is not present, therefore from original
Torque ripple caused by overcoming in reason because of mutual inductance.Referring to FIG. 6, the stator pack relative to traditional three-phase switch reluctance machine
Three-phase windings are arranged in part, and the magnetic line of force that every magnetic pole generates must cross over 3 pole spans, i.e., conventional three-phase switched reluctance machines is any
The length for the flux loop that magnetic pole generates all is 3 times of the length for the flux loop that every magnetic pole of the present embodiment generates, magnetic
Hinder it is larger, winding generate maximum induction it is smaller, but the present embodiment every magnetic pole generate magnetic line of force T be constrained on the magnetic pole
Within pole span, magnetic resistance is small, and then the inductance that A phase winding 137 generates is big.B phase winding and C phase winding are applying driving current when institute
The circuit generated magnetic line of force T when applying driving current is identical with A phase winding for the flux loop of generation, repeats no more.
Wherein, the calculation formula of the winding coefficient of switched reluctance machines are as follows:
Wherein, the number of stator teeth Zd and number of rotor teeth Zz that traditional three-phase switch reluctance machine can use meet: Zz/Zd
It can be 4/6 or 8/6;And integral multiple 8/12,6/12,12/18,24/18,16/24 and 32/24 etc., according to above-mentioned formula
It is 0.866 that winding coefficient, which can be obtained,.Namely three-phase circumferentially 120 ° of distributions due to traditional three-phase switch reluctance machine, cause
Winding coefficient is 0.866.And the number of stator teeth Zd and number of rotor teeth Zz of the switched reluctance machines 10 of the present embodiment are equal, according to upper
Stating formula and can obtaining winding coefficient is 1.
Therefore, the switched reluctance machines 10 of the present embodiment belong to pole span be 180 ° of electrical angles it is whole away from integer slot motor,
The winding system of the switched reluctance machines 10 is 1, and the winding coefficient relative to traditional three-phase switch reluctance machine is 0.866,
The utilization rate of the winding of the present embodiment improves 1.155 times, realizes that winding utilization maximizes, and then improve switched reluctance machines
10 efficiency and the torque of output.
The present invention provides the switched reluctance machines of second embodiment, for the tooth socket parameter of switched reluctance machines to be arranged,
It is described on the basis of the switched reluctance machines of first embodiment.As shown in fig. 7, the width and stator of the present embodiment stator slot
The width ratio of tooth is 1:0.95-0.85, and the width of stator tooth and the width ratio of rotor tooth are 1:1.05-0.95.
It is illustrated by taking the first stator tooth 131 and rotor tooth 121 as an example, as shown in fig. 7, the width of the first stator slot 134
Width ratio with the first stator tooth 131 can be 1:0.95-0.85, i.e., the width of the first stator tooth 131 is less than the first stator slot 134
Width, and then guarantee that the first stator slot 134 possesses enough spaces setting A phase winding 137.Such as: the first stator slot 134
The width ratio of width and the first stator tooth 131 can be 1:0.85;The width of the width of first stator slot 134 and the first stator tooth 131
Spending ratio can be 1:0.9;The width ratio of the width of first stator slot 134 and the first stator tooth 131 can be 1:0.95.Correspondingly,
The ratio of the width of two stator slots 135 and the second stator tooth 132 can be 1:0.95-0.85, the width and third of third stator slot 136
The ratio of stator tooth 133 can be 1:0.95-0.85.
The width of first stator tooth 131 and the width ratio of rotor tooth 121 are 1:1.05-0.95.Wherein, the first stator tooth
131 width and the width ratio of rotor tooth 121 can be 1:1, i.e. the width phase of the width of rotor tooth 121 and the first stator tooth 131
Together, the width of stator tooth and rotor tooth 121 is of same size.The width of first stator tooth 131 and the width ratio of rotor tooth 121 can
For 1:0.95, i.e. width of the width of rotor tooth 121 less than the first stator tooth 131;The width and rotor tooth of first stator tooth 131
121 width ratio can be 1:1.05, i.e. the width of rotor tooth 121 width that is greater than the first stator tooth 131, and rotor tooth 121
Width less than the first stator slot 134 width.Correspondingly, the width of the second stator tooth 132 and the width ratio of rotor tooth 121 are
1:1.05-0.95, the width of third stator tooth and the width ratio of rotor tooth 121 are 1:1.05-0.95.
The present embodiment is 1:0.95-0.85, the width of stator tooth by the width of setting stator slot and the width ratio of stator tooth
The width ratio of degree and rotor tooth is 1:1.05-0.95, enables to the inductance curve of switched reluctance machines with the position of rotor tooth
Set in triangular waveform change, as shown in figure 9, and inductance curve change rate it is big.
Wherein, the air gap between rotor 12 and stator 11 can be 0.1mm~3mm, width and the rotor tooth 121 of stator slot
The difference of width is 8-12 times of air gap, and wherein the width of stator slot is the width of rebate of stator slot, and the width of rotor tooth 121 is
The width at 121 top of rotor tooth.That is the difference of the width of the width and rotor tooth 121 of the first stator slot 134 is the 8-12 of air gap
Times, the difference of the width of the width and rotor tooth 121 of the second stator slot 135 is 8-12 times of air gap, the width of third stator slot 134
The difference of degree and the width of rotor tooth 121 is 8-12 times of air gap.
Further, the air gap between rotor 12 and stator 11 is 0.15mm~2mm, the width and rotor tooth of stator slot
The difference of 121 width can be 10 times of air gap, i.e. the width of stator slot is 1.5mm-20mm bigger than the width of rotor tooth 121.Its
In, the width of the width of the first stator slot 134, the width of the second stator slot 135 and third stator slot 134 is than rotor tooth 121
The big 1.5mm-20mm of width.
The revealed air gap of this implementation can be 1mm, and the width of stator slot is 10mm bigger than the width of rotor tooth 121 at this time.
Air gap between the rotor 12 and stator 11 of the present embodiment can be 0.1mm~3mm, the width and rotor tooth of stator slot
The difference of 121 width is 8-12 times of air gap, in rotor tooth 121 and stator slot face, rotor tooth tip and stator tooth tip
Gap is larger, such as when rotor tooth 121 and the first 134 face of stator slot, the tooth tip of rotor tooth 121 and the first stator tooth 131
The gap of tooth tip is larger, as shown in Figure 7.Therefore magnetic resistance is larger, so that the minimum inductance that A phase winding generates is smaller, to improve
The output torques of switched reluctance machines.
Please with further reference to 16 the first stator tooth 131 and 16 rotor tooths 121 that Fig. 8, Fig. 8 are in switched reluctance machines
The magnetic line of force of switched reluctance machines is measured when position is staggered, the first stator slot 134 is not yet perfectly aligned with rotor tooth 121 at this time,
Since the gap between the first stator slot 134 and rotor tooth 121 is larger, for example, the first stator slot 134 width than rotor tooth 121
The big 10mm of width.Since magnetic line of force T will not tangle intersection, and in the squeezing action by the adjacent magnetic line of force, the magnetic force
Line T can only form closed circuit by the gap between current first stator slot 134 and rotor tooth 121, and the gap is very big,
Therefore magnetic resistance is big, and the inductance for causing A phase winding 137 to generate is small.When the first stator slot 134 is perfectly aligned with rotor tooth 121, nothing
Method detects magnetic line of force T.
In normal work, the inductance curve of A phase stator module was as shown in figure 9, should for the switched reluctance machines of the present embodiment
Inductance curve changes in triangular waveform.It is overlapped at the center of rotor tooth 121 with the center of the first stator slot 134, that is, corresponds to the
When one electrical angle a1, the inductance that A phase winding generates is minimum;In the center of rotor tooth 121 and the center weight of the first stator tooth 131
It closes, that is, when corresponding to the second electrical angle a2, the inductance that A phase winding generates is maximum, and inductance ratio can achieve 21.25, and traditional
The inductance ratio of three-phase switch reluctance machine can only achieve 2.5-4.5 or so.Due to the output torque of switched reluctance machinesInductance is than high meaningGreatly, the output torque of motor is just big, namely improve motor power it is close
Degree.
The quantity of the stator tooth of the present embodiment can be odd number, i.e. the sum of the first stator tooth 131 and the first stator slot 134 is
2N, wherein N is natural number.Therefore the quantity of the first stator tooth 131 and the quantity of the first stator slot 134 can be odd number, can
The natural resonance of slot ripples is avoided, such as the quantity of the first stator tooth 131 is 3, the quantity of the first stator slot 134 is 3.It compares
The quantity of the stator tooth of Conventional switched reluctance motor is even number, and the switched reluctance machines of the present embodiment can turn according to different
Fast and different torques select the quantity of the first stator tooth 131 and the quantity of the first stator slot 134, can adapt to different occasions,
Improve the practicability of switched reluctance machines.
The present invention provides the switched reluctance machines of 3rd embodiment, on the basis of the switched reluctance machines of second embodiment
On be described.As shown in Figure 10, the tooth tip of the rotor tooth 121 in the present embodiment is provided with a top rake 123, and top rake 123 can be with
For arc top rake, the depth D of the top rake 123 is less than 0.8mm, and the length L of top rake 123 is less than the width of rotor tooth 121;Specifically
Ground, the length L of top rake 123 are less than the 1/3 of the width of rotor tooth 121, can significantly reduce the noise of motor.In other implementations
In example, the tooth tip of rotor tooth 121 may be arranged as chamfering, and wherein the radius of chamfering is less than 1mm.
First stator tooth 131 of the present embodiment, the tooth tip structure of the second stator tooth 132 and third stator tooth and above-mentioned rotor
The tooth tip structure of tooth 121 is identical, repeats no more.
The present invention provides the switched reluctance machines of fourth embodiment, on the basis of the switched reluctance machines of first embodiment
On be described.As shown in figure 11, switched reluctance machines further comprise switch driving circuit 21, and switch driving circuit 21 connects
On the winding of DC power supply Us and at least three stator modules, i.e., switch driving circuit 21 connects DC power supply Us, A phase winding, B
On phase winding and C phase winding.
Switch driving circuit 21 is for the periodical successively driving stage phase winding corresponding at least three stator modules
The phase of upper application driving current, the driving period of at least three stator modules offsets one from another, i.e., in A phase stator module 111
Driving stage, switch driving circuit 21 apply driving current in A phase stator module 111;In the driving rank of B phase stator module 112
Section, switch driving circuit 21 apply driving current in B phase stator module 112;In the driving stage of C phase stator module 113, switch
Driving circuit 21 applies driving current in C phase stator module 113.Correspondingly, A phase stator module 111,112 and of B phase stator module
The phase of the driving period of C phase stator module 113 offsets one from another.
Wherein, switch driving circuit 21 is further in the subsequent afterflow of at least three stator modules corresponding driving period
The energy stored on the winding of section at least three stator modules of release, to form freewheel current.I.e. in A phase stator module 111
The period subsequent afterflow period is driven, switch driving circuit 21 forms A phase winding for discharging the energy stored on A phase winding
Freewheel current;In the driving period of the B phase stator module 112 subsequent afterflow period, switch driving circuit 21 is for discharging B phase
The energy stored on winding forms the freewheel current of B phase winding;In the subsequent afterflow of the driving period of C phase stator module 113
Section, switch driving circuit 21 form the freewheel current of C phase winding for discharging the energy stored on C phase winding.
Switch driving circuit 21 includes controller 23 and corresponding at least three stator modules at least three opens respectively
Module is closed, each switch module respectively includes first switch tube, two pole of second switch, the first freewheeling diode and the second afterflow
Pipe, wherein the anode of the first connecting pin connection power supply of first switch tube, the second connection end connection of first switch tube are corresponding
The first end of the winding of stator module, the first connecting pin of second switch connect the second of the winding of corresponding stator module
End, the cathode of the second connection end connection power supply of second switch, the anode of the first freewheeling diode connect corresponding stator pack
The second end of the winding of part, the anode of the cathode connection power supply of the first freewheeling diode, the anode connection of the second freewheeling diode
The cathode of power supply, the cathode of the second freewheeling diode connect the first end of the winding of corresponding stator module.Wherein, first switch
Pipe and second switch are connected with the windings in series of corresponding stator module.
Specifically, switch driving circuit 21 includes controller 23, first switch module corresponding with A phase stator module 111
24, and the corresponding second switch module 25 of B phase stator module 112 and third switch module corresponding with C phase stator module 113
26.First switch module 24 includes first switch tube V1, two pole second switch V2, the first sustained diode 1 and the second afterflow
Pipe D2, second switch module 25 include first switch tube V3, second switch V4, the first sustained diode 3 and the second afterflow two
Pole pipe D4, third switch module 26 include first switch tube V5, second switch V6, the first sustained diode 5 and the second afterflow
Diode D6.
Wherein, the phase difference that the period is driven corresponding at least three stator modules is 2 π/N, and wherein N is at least three fixed
The quantity of sub-component.A phase stator module 111 driving the period and B phase stator module 112 driving the period phase difference be 2 π/
The phase difference of 3, i.e. 120 ° of electrical angle, the driving period of the driving period and C phase stator module 113 of B phase stator module 112 is electricity
120 ° of angle.
As shown in figure 12, the driving period of the present embodiment A phase stator module 111 is 0 ° -120 ° of electrical angle, A phase stator pack
The afterflow period of part 111 is 120 ° -180 ° of electrical angle;The driving period of B phase stator module 112 is 120 ° -240 ° of electrical angle, B
The afterflow period of phase stator module 112 is 240 ° -300 ° of electrical angle;The driving period of C phase stator module 113 is electrical angle
240 ° -360 °, the afterflow period of C phase stator module 113 is 360 ° -420 ° of electrical angle.Wherein, the afterflow period of each stator module
Least partially overlapped, i.e. afterflow period of A phase stator module 111 with the phase of the driving period of next driven stator module
Partly overlapping with the phase of the driving period of B phase stator module 112 is 120 ° -180 °, the afterflow period of B phase stator module 112
Partly overlapping with the phase of the driving period of C phase stator module 113 is 240 ° -300 °.
In the driving period, controller 23 controls first switch tube simultaneously with pulse width modulation mode and second switch is intermittent
Thus conducting adjusts the size of driving current.The pulse width modulation mode can be PWM (Pulse Width Modulation, pulse
Width modulated) signal, in the driving period of A phase stator module 111, controller 23 controls first by pwm signal simultaneously and opens
Pipe V1 and second switch V2 is closed to be switched on or off.Controller 23 sends pwm signal in the inductance minimum that A phase winding generates
To first switch tube V1 and second switch V2;When first switch tube V1 and second switch V2 are simultaneously turned on, DC power supply
Us applies driving current in A phase stator module 111;When first switch tube V1 and second switch V2 are simultaneously closed off, direct current
Source Us stops at A phase stator module 111 and applies driving current, and it is excessive to can be avoided driving current.Controller 23 is produced in A phase winding
Stop sending pwm signal when raw inductance maximum and close to first switch tube V1, first switch tube V1, A phase stator module 111 into
Enter the afterflow period.In other embodiments, pulse width modulation mode can use sine wave signal.
In the afterflow period, it is continuously off that controller 23 controls first switch tube, and is opened with pulse width modulation mode control second
Pipe intermittent conduction is closed, the size of freewheel current is thus adjusted.In the afterflow period of A phase stator module 111, controller 23 can
It is stopped working with controlling DC power supply Us, A phase winding, second switch V2 and the second sustained diode 2 forming circuit, and then release
Put the energy stored on A phase winding.Controller 23 by pwm signal control second switch intermittent conduction, with adjust A phase around
The size of the freewheel current of group.
As shown in figure 13, switched reluctance machines further comprise the current detection circuit connecting with switch driving circuit 21
27, which is used to detect the electric current summation for the winding for flowing through at least three stator modules, i.e. current detecting electricity
Road 27 is i=ia+ib+ic, ia for detecting the electric current summation for flowing through A phase winding, B phase winding and C phase winding, electric current summation
For the electric current for flowing through A phase winding, ib is the electric current for flowing through B phase winding, and ic is the electric current for flowing through C phase winding.
Current detection circuit 27 includes annular core 271 and magnetic field sensor 272 with an opening, and at least three is fixed
The winding of sub-component is wound around respectively on annular core 271, and magnetic field sensor 272 is set to the opening of annular core 271.Its
In, annular core 271 can be C-shaped iron core, and A phase winding, B phase winding and C phase winding are wound around respectively on annular core 271,
Coil L1, coil L2 and coil L3 are formed on annular core 271 respectively.The winding of each stator module is in annular core
The number of turns of winding is identical on 271, i.e., the number of turns of coil L1, the number of turns of coil L2 are identical with the number of turns of coil L3.Wherein, magnetic field passes
Sensor 272 can be linear Hall current sensor.The switched reluctance machines of the present embodiment only need a magnetic field sensor 272 to examine
Electric current summation of the flow measurement through A phase winding, B phase winding and C phase winding, therefore number of sensors is reduced, reduce switching magnetic-resistance electricity
The cost of machine.In other embodiments, current detection circuit 27 can be set to using magnetic balancing current sensor.
Switch driving circuit 21 is according to the electric current summation i detected of current detection circuit 27 respectively to the driving electricity of each winding
Stream and freewheel current are controlled, so that electric current summation keeps preset range.Specifically, switch driving circuit 21 is according to electric current
Summation the i driving current to A phase winding and freewheel current, the driving current of B phase winding and freewheel current, C phase winding respectively
Driving current and freewheel current are controlled, so that electric current summation i keeps stablizing.
In the afterflow period of A winding, controller 23 passes through PWM according to the electric current summation i detected of current detection circuit 27
Signal controls first switch tube V3 simultaneously and second switch V4 is switched on or off, with DC power supply Us in B phase stator module
112 apply driving current, and electric current summation i keeps stablizing, as shown in figure 12.
B winding is in the working principle and C winding for driving period and afterflow period in the work for driving period and afterflow period
Principle is identical in the working principle of driving period and afterflow period as A winding, repeats no more.
The switch driving circuit 21 of the present embodiment according to the electric current summation i detected of current detection circuit 27 respectively to respectively around
The driving current and freewheel current of group are controlled, so that electric current summation keeps preset range, therefore the switch magnetic of this implementation
Hinder the characteristic that motor has servo motor;Since the output torque of switched reluctance machines is stablized, and then reduce switched reluctance machines
Torque fluctuations and noise.
The present invention provides the switched reluctance machines of the 5th embodiment, in the difference of the switched reluctance machines of fourth embodiment
Place is: as shown in figure 14, controller 23 controls first switch constant conduction, and is opened with pulse width modulation mode control second
Pipe intermittent conduction is closed, the size of driving current is thus adjusted.I.e. in the driving period of A phase stator module 111, controller 23
First switch V1 constant conduction is controlled, second switch V2 intermittent conduction is controlled by pwm signal.
The present invention provides the switched reluctance machines of sixth embodiment, in the basis of the switched reluctance machines of fourth embodiment
On be described: as shown in figure 15, switched reluctance machines further comprise the position sensor connecting with switch driving circuit 21
28, position sensor 28 is used to measure the relative position in switched reluctance machines 10 between rotor 12 and stator 11, so that opening
It closes driving circuit 21 and energized state, i.e. 21 basis of switch driving circuit is changed according to the relative position between rotor 12 and stator 11
The maximum induction and minimum inductance of each stator module change energized state, with the work of driving switch reluctance motor.Wherein, position
Sensor 28 includes magnetic coder or optical encoder.
The present invention provides the control method of the electric current of the switched reluctance machines of an embodiment, and the control method of the present embodiment exists
It is described on the basis of the revealed switched reluctance machines of fourth embodiment.As shown in figure 16, which includes:
S161: in the driving period, first switch tube and second switch intermittent conduction are controlled by controller 23 simultaneously;
Or control first switch tube constant conduction, and second switch intermittent conduction is controlled, to adjust the driving current of winding
Size;
S162: in the afterflow period, it is continuously off to control first switch tube by controller 23, and controls between second switch
Having a rest property conducting, to adjust the size of the freewheel current of winding;
S163: controlling driving current and freewheel current according to electric current summation i, so that electric current summation i keeps preset range.
In step S161, the driving period corresponding at least three stator modules is further controlled by controller 23
Phase difference is 2 π/N, and wherein N is the quantity of at least three stator modules.I.e. the driving period of A phase stator module 111 is fixed with B phase
Sub-component 112 drives the phase difference of period for 2 π/3, i.e. 120 ° of electrical angle, the driving period of B phase stator module 112 and C phase
The phase difference of the driving period of stator module 113 is 120 ° of electrical angle.
Pass through the afterflow period and the driving period of next driven stator module of the control stator module of controller 23
Phase is least partially overlapped, wherein the phase of the afterflow period of stator module and the driving period of next driven stator module
Least partially overlapped is π/N.That is the phase of the afterflow period of A phase stator module 111 and the driving period of B phase stator module 112
Partly overlapping is 120 ° -180 °, the phase of the driving period of the afterflow period and C phase stator module 113 of B phase stator module 112
Partly overlapping is 240 ° -300 °, as shown in figure 12.
Wherein, it in the driving period of A phase stator module 111, is controlled simultaneously by controller 23 with pulse width modulation mode
First switch tube V1 and second switch V2 are switched on or off.The inductance generated by controller 23 in A phase winding is minimum
When send pwm signal to first switch tube V1 and second switch V2;It is led simultaneously in first switch tube V1 and second switch V2
When logical, DC power supply Us applies driving current in A phase stator module 111;First switch tube V1 and second switch V2 simultaneously
When closing, DC power supply Us stops at A phase stator module 111 and applies driving current, and it is excessive to can be avoided driving current.
Stop sending pwm signal in the inductance maximum that A phase winding generates by controller 23 to first switch tube V1, the
One switching tube V1 is closed, and A phase stator module 111 enters the afterflow period, enters step S162.
In step S162, in the afterflow period of A phase stator module 111, DC power supply Us is controlled by controller 23
It stops working, and it is continuously off and intermittent with pulse width modulation mode control second switch V2 to control first switch tube V1
Conducting, so that A phase winding, second switch V2 and the second sustained diode 2 forming circuit, and then stored on release A phase winding
Energy, to adjust the size of the freewheel current of A phase winding.
Meanwhile being switched on or off by the first switch tube V3 and second switch V4 that controller 23 controls B winding, with
DC power supply Us applies driving current in B phase stator module 112, wherein controls B winding by the control mode of step S161
First switch tube V3 and second switch V4, details are not described herein.
In step S163, by switch driving circuit 21 from the acquisition electric current summation i of current detection circuit 27, and according to
Electric current summation i controls driving current and freewheel current, so that electric current summation i keeps preset range.Wherein control driving current
Step S161 can be used in method, and step S162 can be used in the method for controlling freewheel current.
The pulse width modulation mode of the present embodiment can be square wave pulse width modulation or Sine Wave Pulse Width Modulation.Wherein, above-mentioned
The pwm signal of embodiment is square wave pulse width modulation.
In the present invention, the inductance that A phase winding generates is minimum, and concretely rotor tooth 121 and the first stator slot 134 are complete
When alignment;The inductance that A phase winding generates is maximum, concretely rotor tooth 121 and when perfectly aligned the first stator tooth 131.
The present embodiment is since previous phase is in the afterflow period, and mutually in the driving period, i.e. A phase winding is entering the afterflow period for conducting
When, B phase winding is entering the driving period;The sum of freewheel current and the driving current of B phase of A phase are kept constant, therefore switch magnetic
The current fluctuation for hindering motor is small, i.e. the electric current summation fluctuation of switched reluctance machines is small, and then the fluctuation of torque is small.Due to previous phase
Freewheel current it is larger, and the driving current that phase is connected is smaller, i.e. the freewheel current of A phase is larger, and the driving current of B phase is smaller;
Therefore magnetic field strength caused by the winding of conducting phase is weak, i.e., magnetic field strength caused by B phase winding is weak, and then reduces noise.
The present invention provides the manufacturing method of the iron core of first embodiment, and as shown in figure 17, the manufacturing method is for manufacturing
The stator core and/or rotor core of the switched reluctance machines of embodiment are stated, specifically includes the following steps:
S171: iron silica-alumina material is provided;
Wherein, iron silica-alumina material can be sendust magnetic powder, can be by 85% iron, 9% silicon and 6%
The alloy powder of aluminium composition.
S172: the stator core and/or rotor core of switched reluctance machines are formed using iron silica-alumina material die casting.
Wherein, powdery is made in iron silica-alumina material, the iron silica-alumina material of powdery is subjected to die casting and forms switched reluctance machines
Stator core and/or rotor core.I.e. by the iron silica-alumina material of powdery carry out die casting into the stator core of stator 12 and/or
The rotor core of person's rotor 11.
Wherein, switched reluctance machines include stator 12 and rotor 11, and wherein stator 12 is provided at least along axial segmentation
Three stator modules, each stator module respectively include the circumferential periodically setting along stator and are spaced each other by stator slot more
The stator tooth of a stator tooth and the winding being set around on stator tooth, at least three stator modules is staggered successively along the circumferential direction of stator
Predetermined angular, the winding in each stator module are same phase winding, rotor 12 include along rotor circumferential periodically setting and
The multiple rotor tooths 121 being spaced each other by rotor slot 122.
When the iron silica-alumina material of powdery is carried out stator core 181 of the die casting into stator 12, in stator core 181
Side setting fluted 182, as shown in figure 18, and winding is wound around in groove 182.It is illustrated by taking A phase winding as an example, the
The side of one stator tooth 131 is arranged fluted 181, A phase winding and is wound around in the groove 182, to reduce A phase stator module 111
Occupied space.
The present embodiment forms the stator core and/or rotor core of switched reluctance machines using the die casting of iron silica-alumina material, by
It is without precious metal in iron silica-alumina material, therefore iron silica-alumina material is cheap, and then reduces cost;In addition, iron sial material
The magnetism of material is good, can be improved the magnetism of stator core.
Further, the material of the iron core of the revealed switched reluctance machines of above-described embodiment is iron silica-alumina material, the iron
Core is formed by iron silica-alumina material die casting.Wherein, powdery is made in iron silica-alumina material first, then by the iron silica-alumina material of powdery into
Row die casting forms the iron core of switched reluctance machines.The iron core of switched reluctance machines may include the stator core and rotor of stator 12
11 rotor core.
The iron silica-alumina material of the embodiment can be sendust magnetic powder, can by 85% iron, 9% silicon and
The alloy powder of 6% aluminium composition, alloy powder form iron core by die casting.
When the iron core of switched reluctance machines is the stator core of stator 12, as shown in figure 18, the side of stator core 181
It is arranged fluted 182, winding is wound around in groove 182.It is illustrated by taking A phase winding as an example, the side of the first stator tooth 131 is set
It is equipped with groove 181, A phase winding is wound around in the groove 182, to reduce the occupied space of A phase stator module 111.
Due to without precious metal in iron silica-alumina material, iron silica-alumina material it is cheap, and then reduce cost;This
Outside, the magnetism of iron silica-alumina material is good, can be improved the magnetism of stator core.
The present invention also provides a kind of wheel, which is driven using switched reluctance machines, and the switched reluctance machines are such as
Preceding switched reluctance machines as described in the examples.
Preferably, which may include hub-type switched reluctance machines, i.e., is driven using hub-type switched reluctance machines,
The hub-type switched reluctance machines are the electric machine structure of outer rotor inner stator.
Further, the present invention also provides a kind of electric vehicle, the electric vehicle can for electric car, battery-operated motor cycle or
Electric bicycle etc..The electric vehicle is pure electric vehicle or hybrid electric vehicle, and the wheel of the electric vehicle is driven using switched reluctance machines,
The switched reluctance machines are also such as preceding switched reluctance machines as described in the examples.Preferably, the driving wheel of the electric vehicle can be adopted
With the car wheel structure in above-described embodiment, i.e. wheel includes hub-type switched reluctance machines, utilizes hub-type switched reluctance machines
Drive vehicle wheel rotation.
It should be noted that the application scenarios of switched reluctance machines provided in an embodiment of the present invention are not limited to electric car,
It is also used as the drivings motor such as ship, big machinery.
It should be noted that the above various embodiments belongs to same inventive concept, the description of each embodiment emphasizes particularly on different fields,
Not detailed place is described in separate embodiment, can refer to the description in other embodiments.
It is provided for the embodiments of the invention switched reluctance machines and electric vehicle above and wheel is described in detail, this
Apply that a specific example illustrates the principle and implementation of the invention in text, the explanation of above example is only intended to
It facilitates the understanding of the method and its core concept of the invention;At the same time, for those skilled in the art, think of according to the present invention
Think, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification should not be construed as pair
Limitation of the invention.
Claims (14)
1. a kind of switched reluctance machines, which is characterized in that the switched reluctance machines include stator and rotor, wherein described fixed
Son is provided at least three stator modules along axial segmentation, and each stator module respectively includes the circumferential week along the stator
The setting of phase property and the multiple stator tooths being spaced each other by stator slot and the winding being set around on the stator tooth, described at least three
The stator tooth of a stator module staggers successively predetermined angular along the circumferential direction of the stator, in each stator module it is described around
Group is same phase winding, and the rotor includes the circumferential periodically setting along the rotor and is spaced each other by rotor slot multiple
Rotor tooth, the material of the iron core of the switched reluctance machines are iron silica-alumina material, and the iron silica-alumina material die casting forms the iron
Core.
2. switched reluctance machines according to claim 1, which is characterized in that the iron core of the switched reluctance machines includes institute
The stator core of stator is stated, the side setting of the stator core is fluted, and the winding winding is in the groove.
3. switched reluctance machines according to claim 1, which is characterized in that the iron silica-alumina material include 85% iron,
9% silicon and 6% aluminium alloy powder.
4. switched reluctance machines according to claim 1, which is characterized in that the stator tooth of at least three stator module
Quantity and of same size, the predetermined angular is T1/N, wherein the T1 is the angle period of the stator tooth, the N is
The quantity of at least three stator module.
5. switched reluctance machines according to claim 1, which is characterized in that the quantity of the stator tooth is odd number.
6. switched reluctance machines according to claim 1, which is characterized in that the quantity of the rotor tooth and the stator tooth
Quantity it is identical, and the width of the rotor tooth be less than the stator slot width.
7. switched reluctance machines according to claim 6, which is characterized in that the width of the stator slot and the stator tooth
Than for 1:0.95-0.85, the width ratio of the stator tooth and the rotor tooth is 1:1.05-0.95.
8. switched reluctance machines according to claim 1, which is characterized in that the switched reluctance machines further comprise out
Driving circuit is closed, the switch driving circuit connects on the winding of DC power supply and at least three stator module, with
Periodically control the DC power supply successively the driving period corresponding at least three stator module on the winding
Apply the driving current, wherein the phase of the driving period of at least three stator module offsets one from another.
9. a kind of manufacturing method of iron core, which is characterized in that the manufacturing method is used to manufacture the stator iron of switched reluctance machines
Core and/or rotor core, the manufacturing method include:
Iron silica-alumina material is provided;
The stator core and/or rotor core of the switched reluctance machines are formed using the iron silica-alumina material die casting.
10. manufacturing method according to claim 9, which is characterized in that the iron silica-alumina material include 85% iron, 9%
Silicon and 6% aluminium alloy powder.
11. manufacturing method according to claim 9, which is characterized in that the switched reluctance machines include stator and turn
Son, wherein the stator is provided at least three stator modules along axial segmentation, each stator module is respectively included along institute
It states the circumferential multiple stator tooths for being periodically arranged and being spaced each other by stator slot of stator and is set around on the stator tooth
The stator tooth of winding, at least three stator module staggers successively predetermined angular along the circumferential direction of the stator, each described fixed
The winding in sub-component is same phase winding, and the rotor includes periodically being arranged and along the circumferential of the rotor by rotor
Multiple rotor tooths that slot is spaced each other.
12. manufacturing method according to claim 11, which is characterized in that using the iron silica-alumina material die casting described in
The stator core of switched reluctance machines includes:
In the side of the stator core, setting is fluted, and in the groove by the winding winding.
13. a kind of wheel, which is characterized in that the wheel uses In-wheel motor driving, and the hub motor is claim 1-8
Described in any item switched reluctance machines.
14. a kind of electric vehicle, which is characterized in that the electric vehicle is pure electric vehicle or hybrid electric vehicle, and the electric vehicle includes such as
The described in any item switched reluctance machines of claim 1-8.
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CN201710783623.4A Pending CN109286289A (en) | 2017-07-21 | 2017-09-01 | Electric vehicle, wheel and its switched reluctance machines |
CN201710788370.XA Active CN109286350B (en) | 2017-07-21 | 2017-09-01 | Electric vehicle, wheel, switched reluctance motor and current control method thereof |
CN201721122153.9U Active CN207504726U (en) | 2017-07-21 | 2017-09-01 | Electric vehicle, wheel, switched reluctance machines and its current detection circuit |
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CN201721155384.XU Active CN207652275U (en) | 2017-07-21 | 2017-09-08 | Electric vehicle, wheel and its switched reluctance machines |
CN201710831234.4A Pending CN109286251A (en) | 2017-07-21 | 2017-09-14 | The manufacturing method of electric vehicle, wheel, switched reluctance machines and its iron core |
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CN201721182520.4U Active CN207504744U (en) | 2017-07-21 | 2017-09-14 | Electric vehicle, wheel and switched reluctance machines |
CN201721182519.1U Active CN207652276U (en) | 2017-07-21 | 2017-09-14 | Electric vehicle, wheel and its switched reluctance machines |
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CN201710788370.XA Active CN109286350B (en) | 2017-07-21 | 2017-09-01 | Electric vehicle, wheel, switched reluctance motor and current control method thereof |
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CN201710784295.XA Pending CN109286290A (en) | 2017-07-21 | 2017-09-01 | Electric vehicle, wheel and its switched reluctance machines |
CN201710810157.4A Pending CN109286291A (en) | 2017-07-21 | 2017-09-08 | Electric vehicle, wheel and its switched reluctance machines |
CN201721155384.XU Active CN207652275U (en) | 2017-07-21 | 2017-09-08 | Electric vehicle, wheel and its switched reluctance machines |
CN201710831234.4A Pending CN109286251A (en) | 2017-07-21 | 2017-09-14 | The manufacturing method of electric vehicle, wheel, switched reluctance machines and its iron core |
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CN201721182520.4U Active CN207504744U (en) | 2017-07-21 | 2017-09-14 | Electric vehicle, wheel and switched reluctance machines |
CN201721182519.1U Active CN207652276U (en) | 2017-07-21 | 2017-09-14 | Electric vehicle, wheel and its switched reluctance machines |
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CN201710885810.3A Pending CN109286294A (en) | 2017-07-21 | 2017-09-26 | Electric vehicle, wheel and its switched reluctance machines |
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CN110341503B (en) * | 2019-06-03 | 2020-09-01 | 中国矿业大学 | Integrated switched reluctance motor driving system of plug-in hybrid electric vehicle |
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